Add GIN indexes for attributes which used to search.

lib/decentralised_book_index/metadata/author.ex

@@ -16,6 +16,10 @@ defmodule DecentralisedBookIndex.Metadata.Author do
   postgres do
     table "authors"
     repo DecentralisedBookIndex.Repo
+
+    custom_indexes do
+      index "name gin_trgm_ops", name: "author_name_gin_index", using: "GIN"
+    end
   end
 
   actions do

lib/decentralised_book_index/metadata/book.ex

@@ -16,6 +16,10 @@ defmodule DecentralisedBookIndex.Metadata.Book do
   postgres do
     table "books"
     repo DecentralisedBookIndex.Repo
+
+    custom_indexes do
+      index "title gin_trgm_ops", name: "book_title_gin_index", using: "GIN"
+    end
   end
 
   actions do

lib/decentralised_book_index/metadata/book_id.ex

@@ -19,6 +19,11 @@ defmodule DecentralisedBookIndex.Metadata.BookId do
     references do
       reference :book, index?: true, on_delete: :delete
     end
+
+    custom_indexes do
+      index "type gin_trgm_ops", name: "book_id_type_gin_index", using: "GIN"
+      index "bid gin_trgm_ops", name: "book_id_bid_gin_index", using: "GIN"
+    end
   end
 
   actions do

lib/decentralised_book_index/metadata/dbi_server.ex

@@ -10,6 +10,10 @@ defmodule DecentralisedBookIndex.Metadata.DBIServer do
   postgres do
     table "dbi_servers"
     repo DecentralisedBookIndex.Repo
+
+    custom_indexes do
+      index "name gin_trgm_ops", name: "server_name_gin_index", using: "GIN"
+    end
   end
 
   actions do

lib/decentralised_book_index/metadata/publisher.ex

@@ -16,6 +16,10 @@ defmodule DecentralisedBookIndex.Metadata.Publisher do
   postgres do
     table "publishers"
     repo DecentralisedBookIndex.Repo
+
+    custom_indexes do
+      index "name gin_trgm_ops", name: "publisher_name_gin_index", using: "GIN"
+    end
   end
 
   actions do